Spin off of Sekirei. Takes place 365 days before the return of Musubi. The tagline is "One year with his girlfriend gone. One year until she returns."

The protagonist, Kotaro lives together with his 3 sexy step-sisters

From Fallen Syndicate:

The Juuza. That is the name given to those of the 13th Zodiac: the cat people. Seen as a vulgar and contemptuous race, they live a life of seclusion away from human eyes. However, as the end of the Han Dynasty draws near, the rise of the Yellow Scarves has thrown the land of the Three Kingdoms into turmoil. As armies converge, a young Juuza woman named Kan'u and her village are forced out of their peaceful lives as Sousou and his punitive force press their way into the village.

The story follows Arcana Famiglia, a self-appointed organization with mysterious powers that has protected a small Mediterranean island from pirates, foreign countries, and other threats. The only daughter of the family's "Papa," Felicitá, will be married to the next head of the family in two months — and the successor will be decided in a competition that Felicitá herself will take part in.

Jin-Woo gets a new beautiful mom who is 10 years older than him.

When Mikoto was little, she first heard the voices of plants. She also gained flower markings on her face and body, as a sign of her connection to them. Unfortunately for her, she was brutally teased and bullied, both for the markings and her claims that she could hear flowers talking. By the time she was in high school, Mikoto took to wearing clothes specifically designed to cover everything, but she still couldn't escape her classmates' bullying.

One day, a strange and exuberant transfer student, Aozakura Yuji, appears and takes an interest in Mikoto. He's determined to start a flower arrangement club, but with a twist: he wants to photograph beautiful girls arranged with flowers. He first pursues Mikoto, both for her beauty and because he bears the same flower markings as she does. After he photographs her for a promotional poster, everyone at school can see the beauty of Mikoto and her flower markings. Will Aozakura's flower arrangement club succeed? Is this the start of a new high school life for Mikoto?

By aquamarinep:
The world has became a place dominated by males. Women are virtually extinct with their number-count in the hundreds and the youngest of the them in her forties. It has been long accepted that a wife, being a gender so rare, can have multiple husbands. Sex change to satisfy sexual desire is a growing phenomenon, although is still looked down upon by society.
In such a disordered place where she is the only girl, Ho Su awakens.

I couldn't kill my assassination target because he's too cute, so I became his girlfriend instead.

From MangaHelpers:
An exorcist has just finished defeating a demon, when one comes falling out of the ceiling. However, she's nothing like the sexy, dangerous demon he had just faced. She has no horns, she's in ragged clothes, she's starving, and despite the fact that she claims she's here for his soul, it's clear that she's little threat. Instead of killing the demon, the exorcist is moved by pity to buy her some food. Now she's determined to tag along with him, eager to do anything she can to be useful.

Regis Ulrich is an incapable soldier; bad at both sword and archery, who passes the time by only reading books. While transferring to a remote region post, he meets a girl who turns out be the red hair and crimson eyed princess Altina, the wielder of the great sword "Grantneil Catoll." Despite being only fourteen years old, she was appointed to become the commander of the army in this remote region simply because she was the illegitimate child of the Emperor. However, she continues to pursue her dream of becoming Empress despite the circumstances that surround her. To achieve this goal, she asks Regis to become her tactician and stand alongside her against the obstacles that are sure to come.

Shouta Oone was feeling that his daily school life had become dull. In the midst of his boredom, he coincidentally ends up learning the outrageous secret of his classmate, Ichigo Otohime! This is a bittersweet youth story, adorned with a secret that mustn't be leaked!

Having lost his money, lover, and future, a man who has given up on everything finds himself reincarnated in the kingdom of Altodestenia. He, Lectival, has no memories prior to being saved by Meriela, the daughter of an aristocrat, and now finds himself rising up to save the kingdom in its current crisis.

From Viz:

Life's not easy when you're living in the shadow of your famous parents. Can shy Yura, the daughter of an award-winning composer and a world-renowned actress, find the courage to step out on her own now that her super-celebrity parents are getting divorced?

The new manga will tell "after stories" about the characters, including Masamune, Aki, and Yoshino, among others.

From Yo Manga:
The main character Jae-Jin has problems getting an erection, but he gets a lucky opportunity that changes his life. Except this time, his boner won't go away? What is he supposed to do?

Nozomu Itoshiki is depressed. Very depressed.
He’s certifiably suicidal, but he’s also the beloved schoolteacher of a class of unique students, each charming in her own way: The stalker. The shut-in. The obsessive-compulsive. The girl who comes to class every day with strange bruises. And Kafuka, the most optimistic girl in the world, who knows that every cloud has a silver lining. For all of them, it’s a special time, when the right teacher can have a lasting positive effect on their lives. But is that teacher Itoshiki, a.k.a. Zetsubou-sensei, who just wants to find the perfect place to die?

Note: Won the 31st Kodansha Manga Award in the Shounen category in 2007 (shared with Dear Boys - Act II).

Masaki Kenshi was taken from his home and was sent with a combat suit to assassinate the young queen Rashara. His mission was unsuccessful and he was captured and would have been typically executed for such a crime. However, Rashara, seeing that Kenshi was forced to carry out such a mission, pardons his life. She allows him to stay at the pilot academy and he becomes friends with many of the women surrounding Rashara. However, there are deep secrets that may threaten the comfortable life that Kenshi is living right now.

From Autumn Scans:
The fourth primogenitor - is the strongest vampire who exists only in the world of legends; yet when this masters the 12 kenju, the spread of the catastrophe of the vampires will appear in Japan.
In order to spy on and erase this, "fourth primogenitor," the government-owned Lion organization has decided to send an attacking magician, "sword shaman" to complete the task. Yet unknowingly, the one who was selected to spy was actually a trainee "sword shaman" girl - Himeragi Yukina.

Beings from a different dimension have started a war with mankind. To counter this threat, an academy called "Genetics" that trains female warriors called "Pandora," who can wield special weaponry and armor, was formed. Kazuya Aoi decided to enroll in this school because of a promise with his sister, an outstanding alumna who died in battle. There he meets second year Satellizer el Bridget, nicknamed "The Untouchable Queen" due to her solitary demeanor but also top of her class whose battle simulation streak is undefeated, until he came and slowly changed her.

Published also in alternative Full Color Version (Korean)

One day, Fujimoto, a 29-year-old temp worker (whose age equals the number of years he’s lived without a girlfriend) suddenly receives a surge of calls and emails all at once from the women connected to his past. That’s right, he’s finally hit popularity, something which comes only once in a lifetime for everyone! Feeling elated, Fujimoto decides to meet them one after the other…or so the story goes.

Nominated for the 3rd Manga Taisho Award (2010).